오상엽 장영수 2024-01-21T03:02:42Z 2024-01-21T03:02:42Z 2021-10-21 2006-06 1229-6422 https://pubs.kist.re.kr/handle/201004/135448 A study on frost prevention of fin-tube heat exchanger is experimently performed by spreading antifreezing solution on heat exchanger surface. It is desirable that the antifreezing solution spreads completely on the surface forming thin liquid film to prevent frost nucleation and crystal growth and to reduce the thermal resistance across the liquid film. A small amount of antifreezing solution falls in drops on heat exchanger surface using two types of supplying devices, and a porous layer coating technique is adopted to enhance the wettedness of antifreezing solution on the surface. It is observed that the antifreezing solution liquid film prevents fin-tube heat exchanger from frosting, and heat transfer performance does not degrade through the frosting tests. The concentration of supplied antifreezing solution can be determined by heat transfer analysis of the first row of heat exchanger to avoid antifreezing solution freezing due to dilution by moisture absorption. 대한설비공학회 부동액 도포에 의한 핀-튜브 열교환기 착상방지 Frost Prevention of Fin-Tube Heat Exchanger by Spreading Antifreezing Solution Article 2 설비공학 논문집, v.18, no.6, pp.477 - 485 설비공학 논문집 18 6 477 485 kci ART001012796 Antifreezing solution(부동액) Frost prevention(착상방지) Fin-Tube heat exchager (핀-튜브 열교환기) Micro liquid film(마이크로 액막)